Bug#1125486: gdm3: /tmp/.X11-unix/ owned by gdm-greeter, causes user session to fail to start

[Simon McVittie]

Control: severity -1 important
Control: tags -1 + unreproducible

On Wed, 14 Jan 2026 at 18:54:20 +0000, Simon McVittie wrote:
>On Wed, 14 Jan 2026 at 09:52:10 -0800, Ian McKellar wrote:
>>When I looked, indeed /tmp/.X11-unix is owned by the gdm greeter user
>
>That directory should have been created early in the boot with correct 
>ownership and permissions by /usr/lib/tmpfiles.d/x11.conf, which is 
>part of the systemd package. Is that not happening on your system?

In the absence of any further information or reports of the same issue 
from anyone else, I'm assuming that this must have been some sort of 
system-specific issue, therefore downgrading this to non-RC and tagging it 
as unreproducible.

If this is still happening, there are some suggestions for next places 
to look in my previous message to the bug.

     smcv